Cutting device for copying-machines.



Afzmss an P. RUDBRT. CUTTING DEVICE POB. COPYING MACHINES.

APPLIOATIO'N FILED MAY 20, 1908.

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A. ZBISS & F. RUDERT. CUTTING DEVICE FOR COPYING MACHINES.

APPLICATION FILED MAY 2o, 1903.

938,199. l Fl GAL Patented Oct. 26, 1909.

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A. ZEISS n I'. RUDERT.

CUTTING DEVICE POR COPYING MACHINES.

APPLICATION FILED MAY zo, 1908A.4

938, 1 99, Patented oet. 26, 1909;

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UNITED STATES PATENT OFFICE.

.AUGUST ZEISS, 0F CI-IARLOTTENBUBG, AND FRIEDRICH RUDERT, OF BERLIN, GER- MANY, ASSIGNORS TO SHANNON-REGISTRATOR-CO. AUG. ZEISS & CO., OF BERLIN,

GERMANY.

CUTTING DEVICE FOR COPYING-MACHINES.

To all whom 'it may concern:

Be it known that we, AUGUST Zniss, manufacturer, and FRIEDRICH RUDERT, engineer, both subjects of the King of Prussia, residing the first at Uhlandstrasse 175, in Charlottenburg, and the other at Am Friedrichshain 26, in Berlin, Germany, have invented certain new and useful Improvements in Cutting Devices for Copying-Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to cutting devices for copying machines, and particularly for that class of copying machines in which a yroll of copying paper is placed and is unwound to receive the press copy and is then automatically cut off after the impression is taken. Y

Oneof the objects of the invention is to provide a machine by means of which original papers of different sizes may be copied and the required length of paper cut off after each impression, thereby effecting a saving in paper.

The cutting or clipping device consists of a xed cutting blade and a movable blade,

the latter being arranged to make a rotary or oscillatory motion past the fixed blade. The movable blade is attached to two movably mounted levers and operates to engage the strip of paper after the impression has been made thereon and to move it forward in the machine and to separate it from the paper strip as it passes beyond the fixed cutting blade.

The invention further consists in the novel construction and arrangement of the various parts as will be more fully hereinafter described.

In the drawings: Figure 1 is a side elevation of the complete machine; Fig. 2 a plan view thereof; Fig. 8 a detail side elevation showing the means for varying the speed of the paper-feeding rolls; Fig. 4 a side ele- Avation showing a slightly dierent form of press-copying machine, the cutting device being the same as shown in Fig. 1; Fig. 5 a plan View of the machine shown in Fig. 4; Fig. 6 a detail vertical sectional view of the paper cutting mechanism; Fig. 7 `a detail vertical sectional view showing a slightly differentuform of mechanism for actuating Specification of Letters Patent.

Patented Oct. 26, 1909.

the movable paper cutting knife; and Fig. 8 a similar view of another form of mechanism for actuating the movable paper cutting knife.

The copying machine or part A may be of any desired form in which the paper to be copied and the press copy paper are run between rollers during the copying operation. We prefer, however, to use the form shown in Figs. l, 2 and 3 in order that We may copy papers of different lengths. The specific construction of this copying machine will be more fully hereinafter described.

On the bed plate or base of the copying machine and at the back of the machine is mounted the cutting mechanism. l This mechanism consists of the two upright side frames or supports l, in which, near the lower ends thereof, is mounted the horizontal transverse driving .shaft 2. On this shaft near each side frame or support is rigidly secured a radial arm 2a. These arms are of different lengths and their outer ends are connected by the cutting blade 3, so that said blade is oblique to the line of the shaft as shown clearly in Fig. 2 of the drawings. Near their upper ends the supports l are formed with vertical slots 42L in which is mounted a transverse cutting blade 4, said blade being carried by blocks which fit snugly in the slots 4a and are held in their depressed position by springs 4". By this means the blade 4 will be permitted to rise slightly as the movable cutting blade 8 engages and passes under it. The blade 4 is arrangedV slightly oblique to the axisv of the shaft 2, as shown clearly in Fig. 2, so that when one end of the blade 3 engages the corresponding end of blade 4 the two blades will beat an acute angle to each other as the movable blade passes blade 4, thereby securing a scissor-like cutting action.

The paper 5, containing the copies of the original papers, on leaving the copying-machine hangs freely down from the rear part of the copying machine and will be caught` from behind by the circular motion of the movable blade 3, and will be carried toward the blade 4 where the cutting off will take place. The rate of motion of the copying machine rollers and of the movable blade 3 is, of course, so fixed that after a certain number of revolutions of the former the desired length of paper willvbe wound off.

' In' order to prevent a cut-off sheet of copying paper, when still moist, from dropping `down from the machine in a folded state, two spring-controlled levers 6 are pivoted near the upper ends of the frame 1, the free ends of said levers being provided with rolls 7. These rolls 7 project a little beyond the cutting edge of the fixed blade 4 and take up the sheet of paper pushed forward by the revolving blade and press it, by the action of their springs, against the movable blade 3. l/Vhen the blade 3 has moved ythe proper distance beyond the blade 4 the rolls 7 will glide gradually off the blade 3 so that the upper edge of the cut-off sheet of paper is released and drops down.

In order to collect a number of copies successively made, a cap 8 is provided on the shaft 2. The cap 3 rests upon the shaft 2 Vby means of bow-like pieces 9, thus being freely held in position, as shown in Figs. 1 and 6. The lower ends of the sides of the cap are preferably bent outwardly in ,order to forma support for the sheets of paper. The lower end of the cut-off sheet is retained by the cap S as shown in Figs. 1 and 6 while the upper end thereof will only be released behind the vertical plane going through the shaft 2, so that the free sheet will be laid on the cap.

Because the separated copies are easily moved by prevailing currents of air, or stick because of theirl humidity to the cutting blade, an additional stripping roller or tube 10, or the like, is movably mounted on the frames by means of two levers 11. This roller or tube is actuated by a cam or curve plate 12 mounted on the shaft 2 and attached to one arm 2a of the moving blade 3 in such a way as to raise the roll 10 when the cutting blade 3 approaches the fixed blade 4 and to lower it by its own weight immediately after the cutting operation has taken place, as shown in Figs. 1 and 6, whereby the sheet of paper which may happen to be brought in motion by the air, or sticks to the fixed blade, is carried down and laid upon the cap 8 where it is held fast by the roller 10. The roller 10 is raised by means of av pin 13 attached to one of the levers 1'1 and projecting inwardly therefrom and against which the moving curve-plate 12 strikes from below.

On the driving shaft 35 of the copying machine is secured a small chain wheel over which travels a drive chain 22. This chain rotates a sprocket wheel on the shaft 2 of the cutting mechanismv and also rotates the shaft 23a on which is mounted the roller 23. The copying machine is operated by means of the crank 35a attached to the driving shaft 35. On the shaft 35, on the opposite side of the machine from the drive chain 22, is secured a small ldriving pinion 36 which at all times is in mesh with a gear 30. This latter gear is mounted on the end of a lever 29 which is pivoted on the shaft 35. The other end of n Y in a segment 34, whereby the lever-may be adjusted on its pivot and then locked in its adjusted position. VOn the shaft 21 of the copying and feeding roller is slidably mounted a pair of gear wheels 32 and 33, the gear 32 being smaller than the gear 33. These gears are carried by a sleeve 33a which is rotatable with the shaft 21 and slidable thereon, any suitable means being employed to thus connect the sleeve with the shaft. A stop 21a is secured to the shaft 21 tojlimit the inward movement of the sleeve and to hold the gear 33 in mesh with the gear 30, a spring' 32a yieldingly holding the sleeve against said stop. When the sleeve 33a is moved outwardly against the tension of the spring and the. gear 30 is in mesh with `a gear 32 the gear 33 will engage the side of the gear 30 and hold the two gears 30 and 32 in'mesh.

The shaft 21 is so placed that by shifting or adjusting the lever 29 gear 30 may be brought into engagement with either of the gears 32 or 33. It is obvious that by driving the feeding and copying rollers through gearY v33 the speed thereof willrbe less than if said rollers were driven through the gear 32. Therefore, in copying short papersthe copying rollers will be driven through the gear 33; while in copying longer papers the feeding and copying rollers will be driven` through the gea-r 32. By this means the length of copying paper fed by the ,copying rolls will be varied without varying the speed of movement of the cutting mechanism so that sheets of paper of different lengths will be cut o by said mechanism. j i

For feeding the original letter or paper to the copying rolls we mount in the forward part of the copying machine proper two horizontal shafts 24 and 25 and secure on said shafts suitable chain or sprocket wheels and mount thereon vendless sprocket chains, said chains being connected together by transverse Vbars 27. These bars, adjacent,`

each chain, are provided with feeding iin? gers 28 which are adapted to Yextend upwardly through suitable slots in the, feed table 2Sa on which the original letters to "be copied are placed. The fingers 28 engage the letter or other paper and force it forward between the feeding rollers, the letter and the copying' paper passing between the feeding and copying' rollers in contact with each other. On the driving shaft 35 is secured a small chain gear which is connected Yby a drive chain 26 to a vsmall gear, mounted on the shaft 24 ofthe feeding mechanism, so,

that vthe said feeding mechanism will.Y be driven simultaneously with the copying and cutting mechanism. j j The copying paper passes over a suitable moistening roll 5a, as shown in Fig. 1, and then 'passes between the copying and feeding rollers. It will, of course, be understood that any suitable form of moistening means may be employed.

In the cutting device shown in Fig. 7, the movable cutting blade 3 is carried by a pair of pivoted levers 18 which are pivoted at 1G and are swung past the blade i by means of a rotatable cam 15. The spring connected to the levers 18 returns the blade 3 to its normal position after each cutting operation.

In the form of cutting device shown in Fig. 8 the cutting blade 3 is mounted. upon a pair of pivoted levers, said levers being actuated by pins 19 fitting and working in a cam slot 20 formed in a metal plate mounted upon the shaft 2. A spring 14 returns the levers 18 to their normal positions after each cutting operation.

Having thus described our invention what we claim as new and desire to secure by Letters Patent is 1. The combination of a rotary copying press containing feed and copying rollers, means for rotating said rollers, a cutting device to receive the paper after it has passed between the copying rolls, said cutting device consisting of an upwardly and rearwardly swinging knife adapted to engage the copying paper and move it rearwardly, a transverse non-swinging knife adapted to be engaged by the cutting edge of the swinging knife to sever the paper carried by said swinging knife, a support arranged to be engaged by the lower end of the paper and to hold it in the rear of the non-swinging knife and adapted to receive the severed portion of the paper, and means operating automatically to engage and hold each severed sheet on said support.

2. The combination of a pair of copying rolls, means for actuating them to feed the copying paper, an upwardly and rearwardly swinging knife adapted to engage the paper after it has passed between the copying rollers and move it rearwardly, a non-swinging knife adapted to be engaged by the rearwardly swinging knife to sever the paper, a support arranged to be engaged by the lower end of the paper to hold it in the rear of the non-swinging knife and to receive the severed sheets and means to engage the paper after it/is severed and quickly depress and hold it on said support.

3. The combination of a pair of feeding and copying rolls, a cutting device operated from the copying mechanism and consisting of an upwardly and rearwardly swinging knife, a non-swinging knife adapted to be engaged by the swinging knife to sever the paper, a support for the severed sheets, a device for moving the severed sheets to the support and holding them thereon, means for lifting said device before each sheet is severed and for permitting rit to Vdrop when said sheets are severed, means for engaging the edge of the severed sheet and for holding it on the swinging knife until said knife has passed rearwardly beyond the nonswinging knife.

4. The combination of a rotary copying press provided with co ying Vrollers and means for driving said ro lers, a cutting device, means connecting said cutting device to the driving mechanism of the copying press, said cutting device consisting of an upwardly and rearwardly swinging knife', a non-swinging knife adapted to be engaged by the swinging knife, a support for 4the severed sheets forward of the non-swinging knifel and in the path of the depending copying paper and adapted to be engaged by said paper when the swinging knife is moving the paper rearwardly to the nonswinging knife, a transverse bar adapted to `engage the severed sheets and hold them on the support, means for lifting said bar above the non-swinging knife when the swinging knife is moved rearwardly, said means -permitting said bar to drop when the swinging knife has engaged the non-swinging knife to sever the paper, means to engage the end of the severed sheet and to hold it on the swinging knife until said knife has moved a predetermined distance in the rear of the non-swinging knife, whereby the severed end of the sheet will be carried rearwardly beyond the paper support.

5. The combination of a rotary copying press containing feed and copying rollers, means for rotating said rollers, a cutting device to receive the paper after it has passed between the copying rolls, said cutting device consisting of an upwardly and rearwardly swinging -knife adapted to engage the copying paper and move it rearwardly, a transverse non-swinging knife adapted to be engaged by the cutting edge of the swinging knife to sever the paper carried by said swinging knife and a support arranged to be engaged by the lower end of the paper to deflect it from the vertical and hold it in the rear of the non-swinging knife and adapted to receive the severed portion of the paper.

6. The combination of a rotary copying press containing feed and copying rollers, means for rotating said rollers, a cutting device to receive the paper after it has passed between the copying rollers, said cutting device consisting of an upwardly and rearwardly swinging knife adapted to engage the copying paper and move it rearwardly, a transverse knife cooperating with said swinging knife to sever the paper, a support to.receive the severed portion of the paper and arranged to be engaged by the lower end'of the paper to deflect it from the vertical and hold it in the rear of the non* swinging knife, means to engage the upper edge of the severed portion of the paper to move ,it rearwardly beyond the paper support and to then release said upper edge of the paper to permit it to drop over theV support.

7. A paper severing device adapted to be operated by a rotary copying press and comprising an operating shaft, an upwardly andY rearwardly swinging knife Operable by said shaft, a transverse knife adapted to co-act with the upwardly and rearwardly swinging knife to sever the paper, a support below the transverse knife and forward of the same and adapted to be engaged by the paper as it is moved upwardly and rearwardly by the swinging knife, and means adapted to hold the upper edge of the severed sheet in contact with the swinging knife until said edge has been carried forward of said transverse knife.

8. A paper severing device adapted to be operated by a rotary copying press and comprising an operating shaft, an upwardly and rearwardly swinging` knife operable by said shaft, a transverse knife adapted to coact vwith the upwardly and rearwardly swinging knife to sever the paper, a support below the transverse knife and forward of the same and adapted to be engaged by the paper as it is moved upwardly and rearwardly by the swinging knife, a device adapted to hold the severed portions of the paper on the said support, means for raising said holding device above t-he transverse knife as the swinging knife moves upwardly and rearwardly to sever the paper, said means permitting said holding device to drop back tothe paper support when the swinging knife is close to the transverse knife. Y

9. A paper severing device adapted to be operated by a rotary copy press and comprising an operating shaft, a pair of radial arms connected thereto, a swinging knife secured to the outer ends of said arms, a transverse nonswinging knife supported above the shaft and in the rear thereof and adapted to be engaged by the swinging l knife, a support, means for holding the severed sheets on said support, and means for lifting the paper holding device to permit the paper support to receive eachsevered sheet.

10. A paper severing device adapted to be operated' by a rotary copy press and comarms connected thereto, a swinging knife secured to the outer ends of said arms, a

above the shaft and in the rear thereof and adapted to be engaged by the swinging knife, a support, a transverse bar adapted to engage the paper and hold it on the paper support, a ,pair of pivoted arms carrying said bar, a cam carried by the shaft and adapted to lift said bar above the severing knives to permit the paper support Vto, receive each severed sheet. 'Y

v11. The combination of a rotary copying press containing copying rollers, means for rotating said rollers, a letter feeding mechanism, a cutting mechanism, and means for varying the speed of the feeding and copying rollers without varying the speed of the letter feeding means and the paper cutting means. Y

12. The combination of a rotary copying press containing copying rollers, means for the letters to be copied, means for feeding the letters from said table to the copying rollers, means for driving said letter feeding means, a cutting mechanism tol sever the copying paper at predetermined intervals, and means for varying the speed of the feeding and copying rollers wit-hout varying the speed of the letter-feeding means or .the paper severing means.

In witness whereof we have hereunto signed our names this 11th day of May 1908, in the presence of two subscribing witnesses.

AUGUST ZEISS. FRIEDRICH RUDERT. lVitnesses n f f HENRY I-IASPER,

VVOLDEMAR HAUPT.

prising an operating shaft, a pair of radial transverse non swinging knife supported rotating said rollers, a feed table to receive 

